Answer:
B. Too much speculation
Explanation: In 1929, there was a huge stock market crash which was a result of the reckless speculation of the business tycoons leading to the disastrous economic slowdown of the British economy. The stock market went under steep expansion and reached its peak, leaving the customers in an extreme state of bankruptcy and unemployment. The entire banking system had failed as it was unable to provide consumer loans instead of providing irrelevant liquidated loans leading the prices of the goods to reach peak and the insufficiency of the consumers to buy was the major drawback to the causing of this Great Depression of 1929.